基于USB2.0的心电图数据采集仪器研究

ECG Signal Acquisition Instrument Based on USB 2.0

摘 要:论述了基于USB2. 0协议传输心电图数据的采集系统的设计,详细地阐述了系统的实现原理。利用AD73360模数转换芯片实现对标准 12导联心电信号的同步采集,分辨率为到 16位。利用EZ USBFX 2作为USB接口器件,能够方便快速地向主机传送数据,并且允许一个主机控制多个采集系统;鉴于DSP在数字信号处理方面地潜力,系统采用ADSP 2181作为控制器。

An electrocardiogram (ECG) is an essential way for diagnosing the heart disease, and the test theories and systems work well with the practice application, whereas, as new technologies and devices come forth one after another, it allow us to acquire the ECG data more conveniently, more accurately, more comprehensively. The authors discuss the design of ECG data acquisition system based on the USB 2.0 protocol, and expatiates the system principle in detail. The system employs two AD73360 to sample the standard 12-lead signal simultaneously, which has a resolution of 16-bit. They utilize EZ-USB FX-2 as the USB interface device, which can transfer the data conveniently and quickly, and also permit the configuration of multi-system controlled by just one host. Considering the DSP as a powerful tool in the field of digital signal processing, ADSP-2181 has been chosen.